protocols

- protocol name database

Synopsis

/etc/inet/protocols

/etc/protocols

Description

The protocols file is a local source of information regarding the
known protocols used in the DARPA Internet. The protocols file can be
used in conjunction with or instead of other protocols sources, including the
NIS maps ``protcols.byname'' and “protocols.bynumber”. Programs use the getprotobyname(3SOCKET) routine to access this
information.

The protocols file has one line for each protocol. The line has
the following format:

official-protocol-nameprotocol-numberaliases

Items are separated by any number of blanks and/or TAB characters. A
`#' indicates the beginning of a comment; characters up to the end
of the line are not interpreted by routines which search the file.
Protocol names may contain any printable character other than a field delimiter, NEWLINE,
or comment character.